Happy by Pharell Williams

I got this from my ex-boss. He said:

"This is not just my favorite song.  It is an amazing worldwide phenomenon.  After listening to the song, in youtube, just type "happy" and then the name of any city around the world.  You might want to start with Jakarta, but you could also try Stockholm, Boston, San Francisco, Madrid, Tokyo, Capetown . . . whatever.  You will be amazed."

And yes... it was amazing!